File:Vintage Calfax Data Brain II Electronic Pocket Calculator

National Museum of American History

Ships for free no P.O. Boxes lower 48 only. Thanks!

Data Brain II by Calfax Vintage Calculator Works With Rare Power Supply #I

Vintage Calculators, Vintage Electronics, Consumer Electronics - PicClick CA

Hardware Database, Page 15

Calfax 890P Scientific Vintage Mini Electronic Calculator Manual and Box *Works

One Hit Wonders

Calculator Book Addendum C-D

Vintage Calculators, Vintage Electronics, Electronics - PicClick AU

Mini Mail #2 - Vintage Calculator Collection!

Powers on and works but only with charger, still doesn’t always work though. Battery compartment is corroded on one prong. Charger is also in need

Data Brain II by Calfax Vintage Calculator (Read)!! For Repair

Hardware Database, Page 15